Watch-case pendant



[No Model.)

B. O. FITCH.

WATCH CASE PENDANT.

No. 3191391. PatentedJune 9, 1885.

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' I UNITED STATES PATENT OFFICE.

EZRA G. FITCH, OF NElVTON, MASSACHUSETTS.

WATCH-CASE PENDANT.

SPECIFICATION forming part of Letters Patent No. 319,691, dated June 9,1885.

Application filed April 2, 1885. (No model.)

T 61/ whom it may concern.-

Be it known that I, EZRA O. FITCH, of New- 7 ton, in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful ImprovementsinWVatch-Cases, of which the'following is aspecification.

This invention is an improvement on that class of pendants for the casesof stem-winding watches in which a nut or screw-cap is applied to thethreaded outer end of the pendant, and is designed and arranged to holda washer or disk against the end of the pendant, and thereby excludedust, the winding arbor or bar passing through the center of saidwasher.

The invention consists, first, in the combi* nation, with the threadedpendant-nut and winding-bar, of a washer clamped at its margin betweensaid nut and the end of the pendant, and having a central orifice whichclosely fits the periphery of the winding-bar, the latter being adaptedto move endwise and rotate independently of the washer, so that thefreedom of its movements is not interfered with by the washer, while theclose fit of the washer against the periphery of the bar excludes dust.

The invention consists, secondly, in the combination, with the pendantand nut, of a springsleeve inserted in a cavityin the pendant and heldtherein by the nut, so that it can be with drawn from the pendant whenthe nut is removed, said sleeve being split at its inner end to formspring-fingers, which engage with annular grooves formed in thewinding-arbor to hold the latterin either its winding or its handsettingposition, all of which I will now pro ceed to describe.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a longitudinal section of a watch-case pendanthaving my improvements. Fig. 2 represents a side view of thespring-sleeve removed from the pendant. Fig. 3 represents a sectionalview of the spring-sleeve constructed in another form.

The same letters of reference indicate the same parts in all thefigures.

In the drawings, (t represents the external- 1 y screw-threaded pendantof a stem winding and setting watch-case.

1) represents the winding and handsetting arbor or stem, passing throughthe pendant, as

usual, and having the crown 0 screwed upon its outer end.

6 represents the nut screwed upon the pendant, and provided with aninwardly=proj ecting shoulder, e.

f represents a disk or washer, preferably of leather or other yieldingmaterial, interposed at its margin between the outer end of the pendantand the shoulder e of the nut. Said washer has a central aperture,through which the winding arbor or stem passes, the aperture being ofsuch size that the arbor or stem fills it closely, a dust-proof jointbeing thus provided, The arbor or stem is free to rotate, and also tomove endwise independently of the washer, so that it can be moved toadapt it either for winding or hand-setting purposes. It will be seenthat the WtSl161,plSS6d against the end of the pendant by the nut andfitting closely against the periphery of the windingarbor, constitutes adiaphragm or packing which effectually prevents the admission of dustthrough the pendant, while the freedom of the arbor or stem frompositive connection with the washer enables it to be freely inanipulatedwithout the necessity of first loosening the nut and washer.

I am aware that a disk or washer has been positively secured to thearbor or stem of a stem winding and setting watch-case, and pressedtoward the end of the pendant by a nut screwed upon the threaded end ofthe pendant; hence I do not claim, broadly, the combina tion of thearbor, washer, threaded pendant, and nut.

11 represents a collar or sleeve inserted in a cavity formed in thependant, and surrounding the winding-arbor. The inner end of said collaror sleeve is reduced in diameter and split lengthwise to formspring-fingers, the ends of which are formed with inwardly-pro jectinglips, so that they will engage with annular grooves formed in theperiphery of the arbor, and thus hold the arbor in different positions,the engagement of the fingers with the one groove holding the arbor inposition for winding, while the engagement of the fingers with the othergroove holds the arbor in position for hand setting. If preferred, thespring portion of the sleeve may be made distinct from the largerportion or body and ICO staked or riveted to it, as shown in Fig. 3. Theouter end of the collar or sleeve i is flush with the outer end of thependant, and the shoulder e of the nut projects inwardly over the marginof the collar or sleeve, as shown in Fig. 1. It will be seen, therefore,that the collar or sleeve 6 is held in place by the nut, and can befreely withdrawn from the pendant when the nut is removed, the operationof applying and removing the collar or sleeve and its spring-fingersbeing, therefore, easily effected.

I claim 1. In a watchea-se, the combination of th threaded pendant, theshouldered nut screwed thereon, the disk or washer confined at itsmargin between the pendant and nut, and the EZRA C. FITCH.

' Witnesses:

EDWARD A. Manse, DUANE H. CHURCH.

